Dear Professor Stiner,

Thank you for the corrections.

This week is a tough week to me, because I have a lot of reports to do. It

means I have to write everything into Japanese and it's real headache.

I find that the contents of each of the sub-tilte is a little bit complicated.

Whenever I go for the next title, I will tend to forget the contents that I have gone

through. I hope that you can understand what my problems are.

Sincerely,

Wong Bak Su